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A202455 Number of (n+2)X4 binary arrays with consecutive windows of three bits considered as a binary number nondecreasing in every row and column 1

%I

%S 729,1194,1876,2835,4137,5854,8064,10851,14305,18522,23604,29659,

%T 36801,45150,54832,65979,78729,93226,109620,128067,148729,171774,

%U 197376,225715,256977,291354,329044,370251,415185,464062,517104,574539,636601,703530

%N Number of (n+2)X4 binary arrays with consecutive windows of three bits considered as a binary number nondecreasing in every row and column

%C Column 2 of A202461

%H R. H. Hardin, <a href="/A202455/b202455.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = (1/4)*n^4 + (15/2)*n^3 + (229/4)*n^2 + 237*n + 427

%e Some solutions for 6X6

%e ..0..0..0..0....0..0..0..0....0..1..0..0....0..0..0..0....0..0..0..0

%e ..0..1..1..1....0..0..0..0....0..1..0..0....0..0..0..0....0..0..1..0

%e ..0..1..1..1....0..0..0..0....0..1..0..0....0..0..0..0....0..0..1..0

%e ..1..1..1..1....0..1..0..1....0..1..1..0....0..0..0..0....0..1..1..0

%e ..1..1..1..1....0..0..1..1....0..1..0..0....0..0..1..0....0..1..1..1

%e ..0..1..1..1....0..0..1..1....1..1..1..1....0..0..0..1....1..1..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 19 2011

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Last modified December 11 19:09 EST 2017. Contains 295919 sequences.